-ifdef(method1).
method1(_This) ->
    {?CLASS_ID,m1}.
-endif.
-ifdef(method2).
method2(_This) ->
    {?CLASS_ID,m2}.
-endif.
-ifdef(method3).
method3(_This) ->
    {?CLASS_ID,m3}.
-endif.
-ifdef(method4).
method4(_This) ->
    {?CLASS_ID,m4}.
-endif.